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RESNET HERS Data by State

On the Path to Net Zero Energy Homes

Over 2,000 Homes Receiving a HERS Index of 40 or Less in 2017

 
Many people consider a HERS Index Score of 40 or less as a tipping point to net zero energy homes.
In 2017, there were 2,099 homes that were HERS Rated and had a HERS Index Score of 40 or less.
 
The breakdown of the number of homes with a HERS Index Score of 40 or less by housing type is:
Housing Type
Number of Homes with HERS Index Score of 40 or Less
Single Family
1,630
Duplex/Triplex
142
Multifamily
327
 
 
The breakdown of the number of homes with a HERS Index Score of 40 or less by state is: 
State
Number of Homes with HERS Index Score of 40 or Less
Alabama
0
Alaska
0
Arizona
112
Arkansas
2
California*
0
Colorado
502
Connecticut
16
Delaware
95
District of Columbia
0
Florida
173
Georgia
3
Hawaii
1
Idaho
5
Illinois
18
Indiana
26
Iowa
37
Kansas
3
Kentucky
8
Louisiana
1
Maine
3
Maryland
22
Massachusetts
123
Michigan
14
Minnesota
21
Mississippi
0
Missouri
5
Montana
1
Nebraska
17
Nevada
0
New Hampshire
19
New Jersey
17
New Mexico
63
New York
231
North Carolina
36
North Dakota
0
Ohio
26
Oklahoma
7
Oregon
11
Pennsylvania
186
Rhode Island
7
South Carolina
3
South Dakota
0
Tennessee
1
Texas
88
Utah
7
Vermont
81
Virginia
30
Washington
15
West Virginia
0
Wisconsin
61
Wyoming
0
*Does not include homes rated in California through the California Title 24 Rating System
 
The top six states with homes HERS rated in 2017 with HERS Index Scores of 40 or less are:
State
Number of Homes with HERS Index Score of 40 or Less
Colorado
502
New York
231
Pennsylvania
186
Florida
173
Massachusetts
123
Arizona
112

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